-/* crypto/ec/ec_lib.c */
/*
- * Originally written by Bodo Moeller for the OpenSSL project.
- */
-/* ====================================================================
- * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
+ * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
*
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-/* ====================================================================
- * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- * Binary polynomial ECC support in OpenSSL originally developed by
- * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <string.h>
return NULL;
}
- ret = OPENSSL_malloc(sizeof(*ret));
+ ret = OPENSSL_zalloc(sizeof(*ret));
if (ret == NULL) {
ECerr(EC_F_EC_GROUP_NEW, ERR_R_MALLOC_FAILURE);
return NULL;
}
ret->meth = meth;
-
- ret->extra_data = NULL;
- ret->mont_data = NULL;
-
- ret->generator = NULL;
- ret->order = BN_new();
- ret->cofactor = NULL;
- if (!ret->order)
- goto err;
- ret->cofactor = BN_new();
- if (!ret->cofactor)
- goto err;
-
- ret->curve_name = 0;
+ if ((ret->meth->flags & EC_FLAGS_CUSTOM_CURVE) == 0) {
+ ret->order = BN_new();
+ if (ret->order == NULL)
+ goto err;
+ ret->cofactor = BN_new();
+ if (ret->cofactor == NULL)
+ goto err;
+ }
ret->asn1_flag = OPENSSL_EC_NAMED_CURVE;
ret->asn1_form = POINT_CONVERSION_UNCOMPRESSED;
-
- ret->seed = NULL;
- ret->seed_len = 0;
-
if (!meth->group_init(ret))
goto err;
-
return ret;
+
err:
BN_free(ret->order);
BN_free(ret->cofactor);
return NULL;
}
+void EC_pre_comp_free(EC_GROUP *group)
+{
+ switch (group->pre_comp_type) {
+ case PCT_none:
+ break;
+ case PCT_nistz256:
+#ifdef ECP_NISTZ256_ASM
+ EC_nistz256_pre_comp_free(group->pre_comp.nistz256);
+#endif
+ break;
+#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
+ case PCT_nistp224:
+ EC_nistp224_pre_comp_free(group->pre_comp.nistp224);
+ break;
+ case PCT_nistp256:
+ EC_nistp256_pre_comp_free(group->pre_comp.nistp256);
+ break;
+ case PCT_nistp521:
+ EC_nistp521_pre_comp_free(group->pre_comp.nistp521);
+ break;
+#else
+ case PCT_nistp224:
+ case PCT_nistp256:
+ case PCT_nistp521:
+ break;
+#endif
+ case PCT_ec:
+ EC_ec_pre_comp_free(group->pre_comp.ec);
+ break;
+ }
+ group->pre_comp.ec = NULL;
+}
+
void EC_GROUP_free(EC_GROUP *group)
{
if (!group)
if (group->meth->group_finish != 0)
group->meth->group_finish(group);
- EC_EX_DATA_free_all_data(&group->extra_data);
+ EC_pre_comp_free(group);
BN_MONT_CTX_free(group->mont_data);
EC_POINT_free(group->generator);
BN_free(group->order);
else if (group->meth->group_finish != 0)
group->meth->group_finish(group);
- EC_EX_DATA_clear_free_all_data(&group->extra_data);
-
+ EC_pre_comp_free(group);
BN_MONT_CTX_free(group->mont_data);
-
EC_POINT_clear_free(group->generator);
BN_clear_free(group->order);
BN_clear_free(group->cofactor);
int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src)
{
- EC_EXTRA_DATA *d;
-
if (dest->meth->group_copy == 0) {
ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return 0;
if (dest == src)
return 1;
- EC_EX_DATA_free_all_data(&dest->extra_data);
-
- for (d = src->extra_data; d != NULL; d = d->next) {
- void *t = d->dup_func(d->data);
-
- if (t == NULL)
- return 0;
- if (!EC_EX_DATA_set_data
- (&dest->extra_data, t, d->dup_func, d->free_func,
- d->clear_free_func))
- return 0;
+ /* Copy precomputed */
+ dest->pre_comp_type = src->pre_comp_type;
+ switch (src->pre_comp_type) {
+ case PCT_none:
+ dest->pre_comp.ec = NULL;
+ break;
+ case PCT_nistz256:
+#ifdef ECP_NISTZ256_ASM
+ dest->pre_comp.nistz256 = EC_nistz256_pre_comp_dup(src->pre_comp.nistz256);
+#endif
+ break;
+#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
+ case PCT_nistp224:
+ dest->pre_comp.nistp224 = EC_nistp224_pre_comp_dup(src->pre_comp.nistp224);
+ break;
+ case PCT_nistp256:
+ dest->pre_comp.nistp256 = EC_nistp256_pre_comp_dup(src->pre_comp.nistp256);
+ break;
+ case PCT_nistp521:
+ dest->pre_comp.nistp521 = EC_nistp521_pre_comp_dup(src->pre_comp.nistp521);
+ break;
+#else
+ case PCT_nistp224:
+ case PCT_nistp256:
+ case PCT_nistp521:
+ break;
+#endif
+ case PCT_ec:
+ dest->pre_comp.ec = EC_ec_pre_comp_dup(src->pre_comp.ec);
+ break;
}
if (src->mont_data != NULL) {
dest->generator = NULL;
}
- if (!BN_copy(dest->order, src->order))
- return 0;
- if (!BN_copy(dest->cofactor, src->cofactor))
- return 0;
+ if ((src->meth->flags & EC_FLAGS_CUSTOM_CURVE) == 0) {
+ if (!BN_copy(dest->order, src->order))
+ return 0;
+ if (!BN_copy(dest->cofactor, src->cofactor))
+ return 0;
+ }
dest->curve_name = src->curve_name;
dest->asn1_flag = src->asn1_flag;
BN_zero(group->cofactor);
/*
- * We ignore the return value because some groups have an order with
+ * Some groups have an order with
* factors of two, which makes the Montgomery setup fail.
* |group->mont_data| will be NULL in this case.
*/
- ec_precompute_mont_data(group);
+ if (BN_is_odd(group->order)) {
+ return ec_precompute_mont_data(group);
+ }
+ BN_MONT_CTX_free(group->mont_data);
+ group->mont_data = NULL;
return 1;
}
int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx)
{
+ if (group->order == NULL)
+ return 0;
if (!BN_copy(order, group->order))
return 0;
return !BN_is_zero(order);
}
+const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group)
+{
+ return group->order;
+}
+
+int EC_GROUP_order_bits(const EC_GROUP *group)
+{
+ if (!ossl_assert(group->meth->group_order_bits != NULL))
+ return 0;
+ return group->meth->group_order_bits(group);
+}
+
int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
BN_CTX *ctx)
{
+
+ if (group->cofactor == NULL)
+ return 0;
if (!BN_copy(cofactor, group->cofactor))
return 0;
return !BN_is_zero(group->cofactor);
}
+const BIGNUM *EC_GROUP_get0_cofactor(const EC_GROUP *group)
+{
+ return group->cofactor;
+}
+
void EC_GROUP_set_curve_name(EC_GROUP *group, int nid)
{
group->curve_name = nid;
if (EC_GROUP_get_curve_name(a) && EC_GROUP_get_curve_name(b) &&
EC_GROUP_get_curve_name(a) != EC_GROUP_get_curve_name(b))
return 1;
+ if (a->meth->flags & EC_FLAGS_CUSTOM_CURVE)
+ return 0;
- if (!ctx)
+ if (ctx == NULL)
ctx_new = ctx = BN_CTX_new();
- if (!ctx)
+ if (ctx == NULL)
return -1;
BN_CTX_start(ctx);
b1 = BN_CTX_get(ctx);
b2 = BN_CTX_get(ctx);
b3 = BN_CTX_get(ctx);
- if (!b3) {
+ if (b3 == NULL) {
BN_CTX_end(ctx);
BN_CTX_free(ctx_new);
return -1;
r = 1;
if (!r) {
+ const BIGNUM *ao, *bo, *ac, *bc;
/* compare the order and cofactor */
- if (!EC_GROUP_get_order(a, a1, ctx) ||
- !EC_GROUP_get_order(b, b1, ctx) ||
- !EC_GROUP_get_cofactor(a, a2, ctx) ||
- !EC_GROUP_get_cofactor(b, b2, ctx)) {
+ ao = EC_GROUP_get0_order(a);
+ bo = EC_GROUP_get0_order(b);
+ ac = EC_GROUP_get0_cofactor(a);
+ bc = EC_GROUP_get0_cofactor(b);
+ if (ao == NULL || bo == NULL) {
BN_CTX_end(ctx);
BN_CTX_free(ctx_new);
return -1;
}
- if (BN_cmp(a1, b1) || BN_cmp(a2, b2))
+ if (BN_cmp(ao, bo) || BN_cmp(ac, bc))
r = 1;
}
return r;
}
-/* this has 'package' visibility */
-int EC_EX_DATA_set_data(EC_EXTRA_DATA **ex_data, void *data,
- void *(*dup_func) (void *),
- void (*free_func) (void *),
- void (*clear_free_func) (void *))
-{
- EC_EXTRA_DATA *d;
-
- if (ex_data == NULL)
- return 0;
-
- for (d = *ex_data; d != NULL; d = d->next) {
- if (d->dup_func == dup_func && d->free_func == free_func
- && d->clear_free_func == clear_free_func) {
- ECerr(EC_F_EC_EX_DATA_SET_DATA, EC_R_SLOT_FULL);
- return 0;
- }
- }
-
- if (data == NULL)
- /* no explicit entry needed */
- return 1;
-
- d = OPENSSL_malloc(sizeof(*d));
- if (d == NULL)
- return 0;
-
- d->data = data;
- d->dup_func = dup_func;
- d->free_func = free_func;
- d->clear_free_func = clear_free_func;
-
- d->next = *ex_data;
- *ex_data = d;
-
- return 1;
-}
-
-/* this has 'package' visibility */
-void *EC_EX_DATA_get_data(const EC_EXTRA_DATA *ex_data,
- void *(*dup_func) (void *),
- void (*free_func) (void *),
- void (*clear_free_func) (void *))
-{
- const EC_EXTRA_DATA *d;
-
- for (d = ex_data; d != NULL; d = d->next) {
- if (d->dup_func == dup_func && d->free_func == free_func
- && d->clear_free_func == clear_free_func)
- return d->data;
- }
-
- return NULL;
-}
-
-/* this has 'package' visibility */
-void EC_EX_DATA_free_data(EC_EXTRA_DATA **ex_data,
- void *(*dup_func) (void *),
- void (*free_func) (void *),
- void (*clear_free_func) (void *))
-{
- EC_EXTRA_DATA **p;
-
- if (ex_data == NULL)
- return;
-
- for (p = ex_data; *p != NULL; p = &((*p)->next)) {
- if ((*p)->dup_func == dup_func && (*p)->free_func == free_func
- && (*p)->clear_free_func == clear_free_func) {
- EC_EXTRA_DATA *next = (*p)->next;
-
- (*p)->free_func((*p)->data);
- OPENSSL_free(*p);
-
- *p = next;
- return;
- }
- }
-}
-
-/* this has 'package' visibility */
-void EC_EX_DATA_clear_free_data(EC_EXTRA_DATA **ex_data,
- void *(*dup_func) (void *),
- void (*free_func) (void *),
- void (*clear_free_func) (void *))
-{
- EC_EXTRA_DATA **p;
-
- if (ex_data == NULL)
- return;
-
- for (p = ex_data; *p != NULL; p = &((*p)->next)) {
- if ((*p)->dup_func == dup_func && (*p)->free_func == free_func
- && (*p)->clear_free_func == clear_free_func) {
- EC_EXTRA_DATA *next = (*p)->next;
-
- (*p)->clear_free_func((*p)->data);
- OPENSSL_free(*p);
-
- *p = next;
- return;
- }
- }
-}
-
-/* this has 'package' visibility */
-void EC_EX_DATA_free_all_data(EC_EXTRA_DATA **ex_data)
-{
- EC_EXTRA_DATA *d;
-
- if (ex_data == NULL)
- return;
-
- d = *ex_data;
- while (d) {
- EC_EXTRA_DATA *next = d->next;
-
- d->free_func(d->data);
- OPENSSL_free(d);
-
- d = next;
- }
- *ex_data = NULL;
-}
-
-/* this has 'package' visibility */
-void EC_EX_DATA_clear_free_all_data(EC_EXTRA_DATA **ex_data)
-{
- EC_EXTRA_DATA *d;
-
- if (ex_data == NULL)
- return;
-
- d = *ex_data;
- while (d) {
- EC_EXTRA_DATA *next = d->next;
-
- d->clear_free_func(d->data);
- OPENSSL_free(d);
-
- d = next;
- }
- *ex_data = NULL;
-}
-
/* functions for EC_POINT objects */
EC_POINT *EC_POINT_new(const EC_GROUP *group)
return NULL;
}
- ret = OPENSSL_malloc(sizeof(*ret));
+ ret = OPENSSL_zalloc(sizeof(*ret));
if (ret == NULL) {
ECerr(EC_F_EC_POINT_NEW, ERR_R_MALLOC_FAILURE);
return NULL;
EC_R_INCOMPATIBLE_OBJECTS);
return 0;
}
- return group->meth->point_set_affine_coordinates(group, point, x, y, ctx);
+ if (!group->meth->point_set_affine_coordinates(group, point, x, y, ctx))
+ return 0;
+
+ if (EC_POINT_is_on_curve(group, point, ctx) <= 0) {
+ ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP,
+ EC_R_POINT_IS_NOT_ON_CURVE);
+ return 0;
+ }
+ return 1;
}
#ifndef OPENSSL_NO_EC2M
EC_R_INCOMPATIBLE_OBJECTS);
return 0;
}
- return group->meth->point_set_affine_coordinates(group, point, x, y, ctx);
+ if (!group->meth->point_set_affine_coordinates(group, point, x, y, ctx))
+ return 0;
+
+ if (EC_POINT_is_on_curve(group, point, ctx) <= 0) {
+ ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M,
+ EC_R_POINT_IS_NOT_ON_CURVE);
+ return 0;
+ }
+ return 1;
}
#endif
goto err;
group->mont_data = BN_MONT_CTX_new();
- if (!group->mont_data)
+ if (group->mont_data == NULL)
goto err;
if (!BN_MONT_CTX_set(group->mont_data, group->order, ctx)) {
BN_CTX_free(ctx);
return ret;
}
+
+int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg)
+{
+ return CRYPTO_set_ex_data(&key->ex_data, idx, arg);
+}
+
+void *EC_KEY_get_ex_data(const EC_KEY *key, int idx)
+{
+ return CRYPTO_get_ex_data(&key->ex_data, idx);
+}
+
+int ec_group_simple_order_bits(const EC_GROUP *group)
+{
+ if (group->order == NULL)
+ return 0;
+ return BN_num_bits(group->order);
+}
projects / openssl.git / blobdiff